Bruxism - Teeth Grinding - Kids Dentist - The Tooth Station

  • 10 years ago
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One of the most common concerns of the parents of patients seen by pediatric dentists is reporting of their child grinding at night while sleeping. Children's dentists should have the experience and technical ability to give advice and treat this condition.

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Grinding of the teeth or technically referred to as bruxism is mainly seen in children as sleep bruxism and is considered a sleep movement related disorder and in a similar classification as restless leg syndrome (RES). Sleep bruxism can be definitively
diagnosed in a sleep laboratory by means of a costly test called polysomnographic recordings.

There does not appear to be a close relationship between pain associated with temporomandibular joint disorder (TMD) and bruxism between sleep disturbances and bruxism.

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It has been reported that up to 88% bruxism of children but only 15% of adults experience bruxism. Bruxers have higher levels of adrenalin and seem to be more anxious. Bruxism is reported by parents to occur most frequently between the ages of 3-6 years but there is a relationship of age and is more common in boys.

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Children of parents who had bruxism are twice as likely to experience bruxism themselves.

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In a minority of cases bruxism is severely harmful to the teeth causing wear on or deterioration of the teeth. In this photo you can see that the teeth are flat with all the cusps or pointy parts of the molar teeth worn down.

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Sometimes, the damage is so significant a hole in the tooth forms. If this hole penetrates to the center of the tooth called the pulp chamber, pain will develop and endodontic therapy is needed to fix the tooth.

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If a tooth that has been damaged by bruxism also has a cavity, restoring this already compromised tooth can be challenging. The fillings can become loose from the force of the grinding and recurrent caries has a tendency to form around and under the filling as seen in this radiograph.

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Also, the fillings and tooth structure around the filling has a tendency to break such as seen in this photo.

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At this point, placement of a cap around and over the tooth is usually the best option to restore the tooth. Sometimes even the stainless steel crown placed can be worn down and get a hole in it -- requiring it to be replaced.

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An oral appliance called a bite guard or mouth guard may be used to prevent damage to the teeth.

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For Children in the 3-6 year age group when bruxism is most common, it is difficult for a child to keep the appliance in their mouth. For children older than 6 and into the mixed dentition phase, with both primary and permanent teeth present, the appliance needs to be change frequently due to the teeth coming and going.